/*
 * Copyright (c) 2020, NVIDIA CORPORATION. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *  * Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 *  * Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *  * Neither the name of NVIDIA CORPORATION nor the names of its
 *    contributors may be used to endorse or promote products derived
 *    from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ``AS IS'' AND ANY
 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR
 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#include "BatchedLZ4Metadata.h"

namespace nvcomp
{

BatchedLZ4Metadata::BatchedLZ4Metadata() :
    Metadata(NVCOMP_TYPE_UCHAR, 0, 0, LZ4Metadata::COMPRESSION_ID),
    m_items()
{
}

void BatchedLZ4Metadata::add(std::unique_ptr<LZ4Metadata> metadata)
{
  if (m_items.size() == 0) {
    // this is a workaround for the compression scheme
    // agnostic API, so that a single metadata returns the correct
    // values. The summation is that the value are sane for batched inputs,
    // while currently unused
    setUncompressedSize(
        getUncompressedSize() + metadata->getUncompressedSize());
    setCompressedSize(getCompressedSize() + metadata->getCompressedSize());
  }

  m_items.emplace_back(std::move(metadata));
}

size_t BatchedLZ4Metadata::size() const
{
  return m_items.size();
}

} // namespace nvcomp
